Help diagnose please!

Outdoor grow. Slow release Osmocote fertilizer which has worked great thus far. Plants have been strong and healthy and now this. ( see photos) It appears to be slowly happening to all the plants of which there are a few. Genetics include Swiss cheese and Hollands Hope. The Hollands Hope appears to have been hit the hardest at this early stage. Any suggestions as to what could remedy the situation would be very helpful. View attachment 1719042View attachment 1719043View attachment 1719044View attachment 1719045

Most growers on here use nutrients your the first one on here using fertilizer!
Pic 3 & 4 look burnt pretty good! The brown tips and upward canoeing are sure
siges of burning!

I'm wondering if perhaps it's some persuasion of fungus as the fertilizer was applied early once with with no problems until now.
It seems odd that it would effect only one specific part of the plant and not another. No?
Also, we went easy on it. The other spots we have using the same exact regiment are fine leading me to believe it is something site specific not nute related

Have u used any pest sprays does look burnt but to severe imo to be from you fert seems like something has directly burnt it just my thoughts

Used some deer spray but that was back in May when we first put em out.

Fuck !!!
Saw this in a post about a month ago, plants are diseased and dieing quickly bro.
Ive had this happen to me ,looking great growing huge then when summer temps get too high maybe or for whatever reason the strain cant handle it ,withers and dies. Looks like major K def(plant wont take it up) but its prob just the strain.